| 摘要 |
An axis block assembly is attached to a block holder arm of a lapping machine. The axis block assembly cooperates with a lens block to hold a lens blank in contact with a lap tool used for finishing a surface of the lens blank. The block holder arm moves the axis block assembly between a raised loading position spaced above the lap tool for loading the lens block and lens blank in the lapping machine, and lowered operative position for locating the axis block assembly proximate the lap tool during operation of the lapping machine. The axis block assembly includes a mounting block for being attached to an end of the block holder arm. An axis block is carried by the mounting block. The axis block has a magnetic surface adapted for engaging a metal base surface of the lens block for holding the lens block against the axis block as the axis block assembly moves from the raised loading position to the lowered operative position proximate the lap tool.
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